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'空压机的异步制法及铜环送到的解决放法'

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'空压机,的,异步,制法,及,铜环,送到,解决,放法,'

'1.小功率三相异步 的简略单纯制动方式 小功率三相异步空压机的发电制动线路图。 它的事情道理是: 事情时，按下起动按钮SB2,因中间继电器KA 吸合，其动合触点KA 闭合， 使电念头起动'

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'2019-04-08 00:02:34'

'2019-04-08 00:02:34'

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'<h3 style="text-align: center;">1.小功率三相异步<img alt="空压机电容器" src="2018/1228/2107.jpg" />的简略单纯制动方式</h3><p>小功率三相异步空压机的发电制动线路图。</p><p>它的事情道理是: 事情时，按下起动按钮SB2,因中间继电器KA 吸合，其动合触点KA 闭合， 使电念头起动运转，同时，并联在SB2 两头的动合触点KA 自锁。</p><p>休止时，按下休止按钮SB1,KA 开释，动合触点断开，使电念头脱离电网，而动断触点KA 将 电阻、电容归路接人电机线端，此时电念头的感应电畅通流畅过常闭触点KA向电容充电。</p><p>因为在充电进程中电流与感应电动势的相位和发电状况相一致，是以在电 念头上发生与原转矩相反的力，起了阻止电念头运转的制动作用，俗称为发电制 动状况。</p><p>对付功率为1kW 以下的小电念头来说，电容量一般可取100~ 200puF(耐压 500V 摆布)，电容量年夜一些，制动后果较好。电容两头应并联放电电阻，使电容 有一个放电归路。</p><p>在运行时，电容器上的电压为零; 在制动时坚持电容器两头的 电压不跨越答应值。</p><p>电容并联的电阻能有用地防止谐振，避免产生过年夜电流与机 械振动。</p><p>按理来说，在交换电路中是不宜采取电解电容器的，但因为电念头脱离 电网的瞬时即开端发电，在还未到达正弦波反向高电压时电念头已处于制动状 态，是以电容器两头蒙受的电压较低，采取电解电容是可行的。</p><h3>12.空压机导电铜环松动的解决措施</h3><p>空压机转子集电环的铜环松动的缘故原由多是因为电刷和铜质导电环持久 的摩擦和通电发烧，发生了必定的暖量，天永日久使铜环因暖膨胀松动，而且集电环两侧的 扎线上层尽缘漆软化，于是产生松动。</p><p>集电环的铜环松动就可能向摆布移动，易造成电刷偏 离铜环，泛起一相断电等情形。</p><p>此时，空压机因两相运行而电流增年夜，轻者引起跳闸停机， 重者电机线圈烧坏。</p><p>对此解决措施，可在每只铜环上加三只静心铜质螺钉。</p><p>尽缘套管上括出一个不穿的沉孔，螺钉拧紧后，用钢焊烧牢，然后再在车床 上校好齐心度车平磨光。如许处置后，铜环松动滑移的征象就不会产生了。</p>'

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'空压机的异步制法及铜环送到的解决放法_常见问题_技术中心_复盛空压机(华北)总代理'

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